Question

1. Find the length of the rectangle whose breadth is 8cm and a diagonal is 12cm.
2. For what value of x, a triangle having sides x, x+1,x+2 be is a right-angled triangle.

Note: From chapter Pythagoras theorem.

Answer 1

Answer:

let length be x

so, by using Pythagoras theorum

p^2+ b^2= h^2

8^2 +x^2 =12^2

64+x^2= 144

x^2 = 144-64

x^2 = 70

x= √70

so length be √70